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53683566687 = 3231691882247
BaseRepresentation
bin110001111111110010…
…100011100001011111
312010120022002202011200
4301333302203201133
51334420443113222
640354545050543
73610220534142
oct617762434137
9163508082150
1053683566687
1120848a79243
12a4a2626a53
1350a6c5b79a
142853a34059
1515e2e61eac
hexc7fca385f

53683566687 has 12 divisors (see below), whose sum is σ = 77567440080. Its totient is φ = 35777731968.

The previous prime is 53683566653. The next prime is 53683566697. The reversal of 53683566687 is 78666538635.

It is not a de Polignac number, because 53683566687 - 211 = 53683564639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53683566617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 912603 + ... + 969644.

It is an arithmetic number, because the mean of its divisors is an integer number (6463953340).

Almost surely, 253683566687 is an apocalyptic number.

53683566687 is a deficient number, since it is larger than the sum of its proper divisors (23883873393).

53683566687 is a wasteful number, since it uses less digits than its factorization.

53683566687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885422 (or 1885419 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 63.

The spelling of 53683566687 in words is "fifty-three billion, six hundred eighty-three million, five hundred sixty-six thousand, six hundred eighty-seven".

Divisors: 1 3 9 3169 9507 28521 1882247 5646741 16940223 5964840743 17894522229 53683566687